Active NPI 1922074947 Individual Practitioner Male Practitioner

Dr. Gregory R Trost , MD

Neurological Surgery • Middleton, WI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Trost, MD is a certified Neurological Surgery practicing in Middleton, WI. With approximately 38 years of clinical experience since graduating from University Of Wisconsin School Of Medicine in 1988, Dr. Trost delivers high-quality medical care to the local community at 9701 TRAPPERS TRL.

Dr. Trost accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, partial removal of middle spine bone with release of spinal cord and/or nerves. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

9701 Trappers Trl

Middleton, WI 535625061

Telephone 6082036321

Medicare Profile & Education

Medical School

University Of Wisconsin School Of Medicine

Graduation Year

1988

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Neurological Surgery in Middleton, WI

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

38 Yrs Matches City Avg

City Avg: 38.0 Yrs

State Avg: 28.4 Yrs

Regional Practice Density

3 Specialists

Practicing in Middleton, WI (185 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

74.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Trost (38 Years) 38 Yrs

Middleton Specialty Average (38.0 Years) 38.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	26	16	$234.00	$66.02
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$359.00	$86.35
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	24	23	$160.00	$36.04
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$535.00	$138.63
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	13	13	$343.00	$94.60

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	52	32	$218.30	$68.76
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	36	36	$346.70	$88.41
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	23	23	$494.30	$143.66
63047 Partial removal of middle spine bone with release of spinal cord and/or nerves	15	15	$13241.00	$718.02
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	11	$155.30	$39.81

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	74	51	$204.00	$67.47
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	36	36	$324.00	$86.84
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	18	18	$462.00	$134.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	49	45	$194.00	$67.42
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	48	48	$308.00	$84.58
63048 Partial removal of spine bone with release of spinal cord and/or nerves	28	16	$4189.00	$182.51
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$440.00	$133.96
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	21	20	$280.00	$103.66
61783 Computer-assisted spinal procedure	20	20	$2490.00	$203.58
63047 Partial removal of middle spine bone with release of spinal cord and/or nerves	19	19	$13130.00	$606.18
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	16	$142.00	$44.74
22612 Fusion of spine in lower back	16	16	$14809.00	$1444.33
22840 Placement of stabilizing device to back of 1 spine bone in neck	11	11	$7820.00	$677.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	61	50	$142.00	$30.84
99202 New patient office or other outpatient visit, typically 20 minutes	37	37	$223.00	$58.90
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	31	31	$293.00	$76.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	83	54	$137.00	$28.10
99202 New patient office or other outpatient visit, typically 20 minutes	72	72	$213.00	$60.94
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	33	33	$280.00	$73.19
63047 Partial removal of middle spine bone with release of spinal cord and/or nerves	14	14	$13130.00	$693.84
22612 Fusion of spine in lower back	12	12	$13431.00	$1482.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	84	63	$133.00	$29.99
99202 New patient office or other outpatient visit, typically 20 minutes	56	56	$207.00	$59.92
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$273.00	$71.38
63048 Partial removal of spine bone with release of spinal cord and/or nerves	17	11	$4146.00	$192.31
99213 Established patient office or other outpatient visit, typically 15 minutes	14	14	$171.00	$59.46
63047 Partial removal of middle spine bone with release of spinal cord and/or nerves	11	11	$12782.00	$641.16

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	121	83	$128.00	$29.37
99202 New patient office or other outpatient visit, typically 20 minutes	59	59	$200.00	$62.39
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$263.00	$71.08
99231 Follow-up hospital inpatient care per day, typically 15 minutes	22	11	$168.00	$37.60
63047 Partial removal of middle spine bone with release of spinal cord and/or nerves	19	19	$12349.00	$674.91
99213 Established patient office or other outpatient visit, typically 15 minutes	18	17	$165.00	$54.79
22612 Fusion of spine in lower back	14	14	$12484.00	$1395.54

Medical Specialties & State Licenses

CMS Verified: 2026-03-04

Neurological Surgery Primary Specialty

NUCC Taxonomy Code: 207T00000X

State License WI 30533

A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Practice Location March 04, 2026

Registered at 9701 TRAPPERS TRL, MIDDLETON, WI 535625061 (Tel: 6082036321)

📍

Updated Business Mailing Address March 04, 2026

Registered at 9701 TRAPPERS TRL, MIDDLETON, WI 535625061 (Tel: 6082036321)

✅

NPI Profile Active September 29, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location September 29, 2015

Registered at 600 HIGHLAND AVE, MADISON, WI 53792 (Tel: 6082637502)

📍

Updated Business Mailing Address September 29, 2015

Registered at 7974 UW HEALTH CT, MIDDLETON, WI 535625531

👤

Provider Name / Credentials Updated September 29, 2015

Recorded as GREGORY TROST, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 29, 2015

Neurological Surgery (License #30533 in WI)

🟢

Initial NPI Registration & Enumeration February 28, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1922074947

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: February 28, 2006

Last Update: March 04, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

9701 Trappers Trl

Middleton, WI 535625061

Phone: 6082036321

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.